| Autor: |
H. K. Gupta, G. S. Mittal, S. K. Verma, D. V. Divakaria Rao, M. S. Joshi, R. L. Dhar, S. C. Jain, A. V. Ramana Rao, P. Rama Rao, T. Madoom Hussain, D. V. Subba Rao, S. S. H. Jafri, V. N. Sarma, B. Vijayagopal, K. N. S. Reddy, V. M. Tiwari, M. B. Vyageshwar Rao, Md. Ghous Uzzaman |
| Rok vydání: |
2022 |
| Popis: |
CSIR-NGRI has been carrying out integrated G3 investigations in Antarctica since the second IAE. The geophysical studies of the initial 25 years of IAE included surface and helicopter-borne magnetic, EM, seismic, gravity, and paleomagnetic surveys. A total of 60 line-km magnetic profiles over the ice-shelf revealed the magnetic characteristics of the bedrock beneath the ice cover. Based on these and in conjunction with the early seismic studies, a crustal structural model was evolved. Secondary sulfide mineralisation near a suspected fissure zone in Schirmacher Oasis (SO) was inferred. It was based on the multi-frequency EM and radiometric measurements. The helicopter-borne magnetic N-S profiles over an area of 100x100sq.km with a spacing of about 3.0 km between SO and Wohlthat Mountains (WM) yielded gross features of sub-glacial topography nunataks (exposed peaks of sub-glacial hills). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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